Search: id:"swepub:oai:DiVA.org:hh-18867" >
Electrical and opti...
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Pettersson, Håkan,1962-Högskolan i Halmstad,Tillämpad matematik och fysik (MPE-lab)
(author)
Electrical and optical properties of InP nanowire ensemble p(+)-i-n(+) photodetectors
- Article/chapterEnglish2012
Publisher, publication year, extent ...
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2012-03-14
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Bristol, UK :Institute of Physics Publishing (IOPP),2012
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printrdacarrier
Numbers
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LIBRIS-ID:oai:DiVA.org:hh-18867
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https://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-18867URI
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https://doi.org/10.1088/0957-4484/23/13/135201DOI
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https://lup.lub.lu.se/record/2431802URI
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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Funding: Halmstad University, Erik Johan Ljungberg Foundation, Carl Trygger Foundation, Swedish Research Council, Swedish National Board for Industrial and Technological Development, Swedish Foundation for Strategic Research, EU (grant no. 214814) & E.ON AG as part of the E.ON International Research Initiative
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We report on a comprehensive study of electrical and optical properties of efficient near-infrared p(+)-i-n(+) photodetectors based on large ensembles of self-assembled, vertically aligned i-n(+) InP nanowires monolithically grown on a common p(+) InP substrate without any buffer layer. The nanowires have a polytype modulated crystal structure of wurtzite and zinc blende. The electrical data display excellent rectifying behavior with an ideality factor of about 2.5 at 300 K. The ideality factor scales with 1/T, which possibly reflects deviations from classical transport models due to the mixed crystal phase of the nanowires. The observed dark leakage current is of the order of merely similar to 100 fA/nanowire at 1 V reverse bias. The detectors display a linear increase of the photocurrent with reverse bias up to about 10 pA/nanowire at 5 V. From spectrally resolved measurements, we conclude that the photocurrent is primarily generated by funneling photogenerated carriers from the substrate into the NWs. Contributions from direct excitation of the NWs become increasingly important at low temperatures. The photocurrent decreases with temperature with an activation energy of about 50 meV, which we discuss in terms of a temperature-dependent diffusion length in the substrate and perturbed transport through the mixed-phase nanowires. © 2012 IOP Publishing Ltd.
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Zubritskaya, IrinaHögskolan i Halmstad,Tillämpad matematik och fysik (MPE-lab)(Swepub:hh)irizubx
(author)
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Nghia, Ngo TuanHögskolan i Halmstad,Tillämpad matematik och fysik (MPE-lab)(Swepub:hh)ngonghx
(author)
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Wallentin, JesperLund University,Lunds universitet,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Solid State Physics and the Nanometer Structure Consortium, Lund University, Lund, Sweden(Swepub:lu)ftf-jwa
(author)
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Borgström, MagnusLund University,Lunds universitet,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Solid State Physics and the Nanometer Structure Consortium, Lund University, Lund, Sweden(Swepub:lu)ftf-mbo
(author)
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Storm, KristianLund University,Lunds universitet,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Solid State Physics and the Nanometer Structure Consortium, Lund University, Lund, Sweden(Swepub:lu)ftf-ktn
(author)
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Landin, Lars,1948-Högskolan i Halmstad,Tillämpad matematik och fysik (MPE-lab)(Swepub:hh)ll
(author)
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Wickert, PeterSol Voltaics AB, Ideon Science Park, Lund, Sweden
(author)
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Capasso, FedericoSchool of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts, USA
(author)
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Samuelson, LarsLund University,Lunds universitet,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Solid State Physics and the Nanometer Structure Consortium, Lund University, Lund, Sweden(Swepub:lu)ftf-lsa
(author)
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Högskolan i HalmstadTillämpad matematik och fysik (MPE-lab)
(creator_code:org_t)
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In:NanotechnologyBristol, UK : Institute of Physics Publishing (IOPP)23:130957-44841361-6528
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